refactor: remove path.resolve()

- require.resolve() by Node.js follows a Node.js module resolution algo
  which includes checking if the resolved path actually exists on the
  file system.

lib/cli/collect-files.js

@@ -54,9 +54,8 @@ module.exports = ({
   }, []);
 
   fileArgs.forEach(file => {
-    const fileAbsolutePath = path.resolve(file);
     try {
-      require.resolve(fileAbsolutePath);
+      require.resolve(file);
     } catch (err) {
       // this error doesn't bubble up to the middleware like how
       // --require handles it so we have to do it here